This Week in The Journal

Illustration of the spine morphology observed in cells cotransfected with enhanced green fluorescent protein and either an empty vector [control (Ctrl)], PAK3 MRX3 gene (MRX), or PAK3 carrying the Kdead mutation (Kdead). The arrows indicate elongated spines, and the asterisk indicates filopodia-like protrusions. See the article by Boda et al. for details.